EP2161607A1 - Caméra dentaire - Google Patents

Caméra dentaire Download PDF

Info

Publication number
EP2161607A1
EP2161607A1 EP09175365A EP09175365A EP2161607A1 EP 2161607 A1 EP2161607 A1 EP 2161607A1 EP 09175365 A EP09175365 A EP 09175365A EP 09175365 A EP09175365 A EP 09175365A EP 2161607 A1 EP2161607 A1 EP 2161607A1
Authority
EP
European Patent Office
Prior art keywords
dental camera
lens
variable liquid
image
liquid lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09175365A
Other languages
German (de)
English (en)
Other versions
EP2161607B1 (fr
Inventor
Frank Guse
Dieter BÜRCKNER-KOYDL
Ulrich Partheymüller
Stefan Knoch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qioptiq Photonics GmbH and Co KG
Original Assignee
Linos Photonics GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37307292&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2161607(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Linos Photonics GmbH and Co KG filed Critical Linos Photonics GmbH and Co KG
Publication of EP2161607A1 publication Critical patent/EP2161607A1/fr
Application granted granted Critical
Publication of EP2161607B1 publication Critical patent/EP2161607B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/12—Fluid-filled or evacuated lenses
    • G02B3/14—Fluid-filled or evacuated lenses of variable focal length
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00163—Optical arrangements
    • A61B1/00188—Optical arrangements with focusing or zooming features
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00163—Optical arrangements
    • A61B1/00188—Optical arrangements with focusing or zooming features
    • A61B1/0019—Optical arrangements with focusing or zooming features characterised by variable lenses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/045—Control thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/24—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
    • A61B1/247—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2407—Optical details

Definitions

  • the invention relates to a generic dental camera according to the preamble of the main claim, namely one having a housing, with an object disposed therein, an object on an imager imaging lens, with a focusing electrically changing focusing device and with a control for this.
  • Such a dental camera is known ( DE 101 25 772 A1 ).
  • this known dental camera one of a designed as a handle attached to the housing control controlled electric motor is provided, whose axis is provided with an adjusting spindle. This is performed in an actuator on which the image pickup is fixed and can be adjusted due to the rotation of the axis of the electric motor, so that by the focusing device, the focus of the image of the lens by the relative position of at least one lens to the other lenses of the lens or whose relative position to the image pickup can be changed.
  • a disadvantage of this known dental camera is the fact the necessity of both the separate actuator and the adjusting spindle, in addition to the electric motor itself, which parts require additional space inside the housing. This prevents the dental camera from building small.
  • the design and the ergonomics of such dental cameras is negatively influenced, although the focus is done so easily.
  • the invention has the object of developing a generic dental camera so that it is designed physically small.
  • the focusing device has a changeable by means of an electrical voltage in its imaging properties electro-optical device, preferably a variable by means of an electrical voltage in their imaging properties variable liquid lens.
  • a focusing device with an electro-optical component preferably with a variable liquid lens is used, which is controlled electronically by the controller so that their imaging properties in the form of focusing be changed to different object distances, without moving parts of the lens or the relative position to the image sensor to be changed.
  • the advantage is achieved that in the space of the dental camera neither an electric motor nor a rotary spindle nor an additional actuator, but only an anyway necessary lens must be provided as an electro-optical device in the lens as a variable liquid lens, so far no additional space is required.
  • the adjustment takes place practically without power, that is without such electrical power loss as an electric motor needs.
  • variable liquid lens is arranged in the immediate vicinity of an aperture diaphragm or its image, because then a particularly small design of the dental camera can be achieved.
  • an adjustable aperture can be provided in the lens whose diameter is adjustable in a predetermined, certain ratio to the focus position.
  • Either this adjustable aperture is firmly connected on the one hand to the housing and on the other hand to a drive - or vice versa - e.g. designed as an iris diaphragm.
  • the adjustment of the adjustable diaphragm is particularly simple when it is designed as a liquid crystal panel (LCD) and - also practically without power - is set via a further electrical voltage.
  • LCD liquid crystal panel
  • - also practically without power - is set via a further electrical voltage.
  • the controller is designed as a processor of the image sensor to determine the sharpness, the output of the electrical voltage for the variable liquid lens leads and the output is connected to the variable liquid lens, because then manual adjustment of the focus is not required, but takes place automatically. It is no longer necessary to focus more, which greatly simplifies the possibility of cleaning the camera and disinfection in training and use as a dental camera.
  • a total of 5 designated dental camera has a housing 6 with an objective disposed therein 40,41,42 with lenses 40,41,42, which images an object on an image pickup 7.
  • the objective 40, 41, 42 has a partial objective 40 which generates a real intermediate image between the object and the image pickup 7 and is provided with a further optical arrangement 41, 42, which then images the real intermediate image onto the image pickup 7.
  • the further optical arrangement 41, 42 has a first lens 41 arranged adjacent to the partial lens 40 and a second lens group 42 arranged at a distance therefrom.
  • variable liquid lens 8 - As part of the lens - formed, the focusing electrically changing focusing device is provided, which is controlled by a controller. With 9 is the electrical Supply to the variable liquid lens 8 is shown.
  • the variable liquid lens 8 is arranged between the first 41 and the second lens group 42.
  • the housing 6 of the dental camera 5 in the lens on an adjustable aperture 10 the diameter of which is adjustable in a certain relationship to the focus position and as a liquid crystal shutter (LCD) is formed, which is controlled by a further electrical voltage.
  • LCD liquid crystal shutter
  • the image pickup 7 is further provided with the controller 11 configured to determine the image sharpness whose output carries the voltage for the variable liquid lens 8 and is connected to the input thereof.
  • This training of the camera is particularly suitable for use as a dental camera.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Optics & Photonics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Veterinary Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Astronomy & Astrophysics (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Eye Examination Apparatus (AREA)
  • Automatic Focus Adjustment (AREA)
  • Lens Barrels (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Adjustment Of Camera Lenses (AREA)
EP09175365.7A 2005-10-27 2006-09-10 Caméra Active EP2161607B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005051714A DE102005051714A1 (de) 2005-10-27 2005-10-27 Kamera
EP06018926A EP1780575B1 (fr) 2005-10-27 2006-09-10 Caméra

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP06018926.3 Division 2006-09-10

Publications (2)

Publication Number Publication Date
EP2161607A1 true EP2161607A1 (fr) 2010-03-10
EP2161607B1 EP2161607B1 (fr) 2013-07-10

Family

ID=37307292

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09175365.7A Active EP2161607B1 (fr) 2005-10-27 2006-09-10 Caméra
EP06018926A Active EP1780575B1 (fr) 2005-10-27 2006-09-10 Caméra

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06018926A Active EP1780575B1 (fr) 2005-10-27 2006-09-10 Caméra

Country Status (3)

Country Link
EP (2) EP2161607B1 (fr)
AT (1) ATE471527T1 (fr)
DE (2) DE102005051714A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012126324A1 (fr) * 2011-03-21 2012-09-27 Carestream Health, Inc. Procédé d'auto-focalisation utilisant une lentille liquide
DE202013007639U1 (de) 2013-08-27 2013-11-13 Benno Raddatz Modulare Multifunktions-Behandlungs- und Operationsleuchte für die Medizin und Zahnmedizin
EP3053506A1 (fr) 2015-02-06 2016-08-10 Qioptiq Photonics GmbH & Co. KG Caméra intravaginale
WO2021009465A1 (fr) 2019-07-18 2021-01-21 Université De Versailles Saint-Quentin-En-Yvelines Dispositif d'observation d'une cellule ou d'un ensemble de cellules vivantes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2238484B1 (fr) 2008-01-14 2012-01-11 Koninklijke Philips Electronics N.V. Lentille fluide avec un systeme de liberation de pression
US8571397B2 (en) 2008-11-21 2013-10-29 Carestream Health, Inc. Auto focus intraoral camera with liquid lens
JP5433381B2 (ja) * 2009-01-28 2014-03-05 合同会社ＩＰ Ｂｒｉｄｇｅ１号 口腔内測定装置及び口腔内測定方法
DE102009017819A1 (de) * 2009-04-20 2010-10-21 DüRR DENTAL AG Dentale oder medizinische Kamera
CN102596002B (zh) * 2009-10-30 2014-12-17 卡尔斯特里姆保健公司 具有液体透镜的口内照相机
EP2693932A4 (fr) * 2011-04-08 2014-08-27 Carestream Health Inc Caméra intra-orale ayant une lentille à base de liquide pour une stabilisation d'image
US9439568B2 (en) * 2014-07-03 2016-09-13 Align Technology, Inc. Apparatus and method for measuring surface topography optically

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769375A1 (fr) * 1997-10-08 1999-04-09 Univ Joseph Fourier Lentille a focale variable
WO2002096277A2 (fr) * 2001-05-26 2002-12-05 Dürr Dental GmbH & Co. KG Camera dentaire ou endoscopique
DE29824899U1 (de) * 1997-07-30 2003-06-05 Linos Photonics Gmbh & Co Kg Kamera und insbesondere modulare Dentalkamera
US20040228003A1 (en) * 2003-05-13 2004-11-18 Tetsuhide Takeyama Image capturing unit and image capturing device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5071229A (en) 1988-08-08 1991-12-10 Olympus Optical Co., Ltd. Imaging apparatus having electrooptic devices which comprise a variable focal length lens
JPH1073758A (ja) 1996-06-07 1998-03-17 Olympus Optical Co Ltd 結像光学系
EP1599753A1 (fr) * 2003-02-25 2005-11-30 Koninklijke Philips Electronics N.V. Objectif pour dispositif d'enregistrement/lecture a disque optique comprenant un objectif variable constitue par l'interface entre deux fluides non miscibles
FR2876267B1 (fr) * 2004-10-08 2007-02-23 Thales Sa Tete de camera endoscopique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29824899U1 (de) * 1997-07-30 2003-06-05 Linos Photonics Gmbh & Co Kg Kamera und insbesondere modulare Dentalkamera
FR2769375A1 (fr) * 1997-10-08 1999-04-09 Univ Joseph Fourier Lentille a focale variable
WO2002096277A2 (fr) * 2001-05-26 2002-12-05 Dürr Dental GmbH & Co. KG Camera dentaire ou endoscopique
DE10125772A1 (de) 2001-05-26 2002-12-05 Duerr Dental Gmbh Co Kg Dentale oder endoskopische Kamera
US20040228003A1 (en) * 2003-05-13 2004-11-18 Tetsuhide Takeyama Image capturing unit and image capturing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Philips' Fluid Lenses", 3 March 2004 (2004-03-03), XP002565499, Retrieved from the Internet <URL:http://www.dpreview.com/news/0403/04030302philipsfluidlens.asp> [retrieved on 20100101] *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012126324A1 (fr) * 2011-03-21 2012-09-27 Carestream Health, Inc. Procédé d'auto-focalisation utilisant une lentille liquide
US9204788B2 (en) 2011-03-21 2015-12-08 Carestream Health, Inc. Autofocus method using liquid lens
DE202013007639U1 (de) 2013-08-27 2013-11-13 Benno Raddatz Modulare Multifunktions-Behandlungs- und Operationsleuchte für die Medizin und Zahnmedizin
EP3053506A1 (fr) 2015-02-06 2016-08-10 Qioptiq Photonics GmbH & Co. KG Caméra intravaginale
WO2021009465A1 (fr) 2019-07-18 2021-01-21 Université De Versailles Saint-Quentin-En-Yvelines Dispositif d'observation d'une cellule ou d'un ensemble de cellules vivantes
FR3098930A1 (fr) 2019-07-18 2021-01-22 Université De Versailles Saint-Quentin-En-Yvelines Dispositif d’observation d’une cellule ou d’un ensemble de cellules vivantes

Also Published As

Publication number Publication date
EP1780575B1 (fr) 2010-06-16
EP2161607B1 (fr) 2013-07-10
ATE471527T1 (de) 2010-07-15
DE102005051714A1 (de) 2007-05-03
EP1780575A1 (fr) 2007-05-02
DE502006007215D1 (de) 2010-07-29

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